Printing mechanism for tabulating machines



May 16, 1933. F. M. CARROLL 1,909,571

I PRINTING MECHANISM FOR TABULATING MACHINES Filed June 22, 1928 8Sheets-Sheet 1 a vw auto z $5 65 elf team May 16, 1933. F. M. CARROLL1,909,571

PRINTING MECHANISM FOR TABULATING MACHINES Filed June 22, 1928 8Sheets-Sheet 2 an Eng 0 avwewtoz May 16, 1933.

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F. M. CARROLL PRINTING MECHANISM FOR TABULATING MAQHINES Filed June 221928 8 SheetsSheet 4 May 16, 1933. F. M. CARROLL PRINTING MECHANISM FORTABULATING MACHINES Filed June 22, 1928 a Sheets-Sheet FIGS. F'GE.

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F. MIQARROLL PRINTING macxmmsm 'FOR nsumwme nacrmias Filed'Jung 22, 1928s snets-sheet 6 F. M. CARROLL I 1,909,531

PRINTING MECHANISM FOR TABULATING MACHINES Filed June 22, 1928 May 16,1933.

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Patented May 16, 1933 UNITED STATES PATENT! OFFICE FRED M. CARROLL, OFYONKERS, NEW YORK, ASSIGNOR TO THE TAIBULATING MACHINE COMPANY, OFENDICO'IT, NEW YORK, A CORPORATION OF NEW JERSE'Y PRINTING MECHANISM FORTABULATING MACHINES Application filed June 22,

This invention relates to printing mechanisms, in general, and moreparticularly to the paper feeding mechanisms for accounting machineswhereby the paper may be spaced variable amounts to-meet some particularrequirement.

Machines of the type to which the present improvements have been appliedare em ployed in varied lines of business, the accounting practices andrequirements of which are similarly diversified. At the present time theaccounting and printing portions of such machines are almost universalso that a standard type of machine may be altered to meet the variousneeds. Heretofore the efiiciency of such machines has been reducedinasmuch as no provision has previously been made for varying the paperfeed to conform to-the difi'erent requirements. It is then a broadobject of the present invention to provide a paper feeding attachmentthat is substantially universal in its functions and one that may bereadily altered to meet the different requirethat thelast item may besuitably separated from the total for purposes of identification andthat the total may be suitably spaced from the first item of a-followinggroup of items. 7 a

In connection with spacing items and totals it is a further object toprovide, improved means to automatically space the paper if' a totalshould be taken prior to the completion of the listing operations. K

It is astill further object of the present invention to provide meanswhereby several pairs of feeding rollers may be driven simultaneously orindependently by the listing and total taking mechanism to provide forfeeding narrow or wide record sheets and byselective means to providefor printing 1928. Serial No. 287,549.

the items on one sheet and the totals on another.

It is a still further object of thepresent invention to provide meanswhereby totals may be'successively printed without related items and thepaper spaced to accommodate such totals and selectively controlled bythe total taking driving means or the usual listing driving means.

Other objects of the invention will be clear from the following detaileddescription which should be read in connection with the accompanyingdrawings, in which:

Fig. 1 is a view in side elevation of a conventional form of tabulatorwith the improved attachment associated therewith;

Fig. 2 is a front view in elevation of the machine shown in Fig. 1;

a F ig. 3 is a cross sectlonal view of the paper feeding deviceassociated withfthe total printing mechanism taken on the line 3-3 ofFig. 2;

Fig. 4 is a cross sectional view of the paper feeding device associatedwith the item printing mechanism;.

Fig. 5 is a view taken on the line 5-5 of Fig. 4;

Fig. 6 is a vlew taken on the line 6-6 of I Fig. 4;

Fig. 7 is a top plan view taken on the line 77 of Fig. 3; a

Fig. 8 is a diagrammatic representation of the electrical controleircuits;

Fi 9 is a fragmentary sectional view showing in detail the constructionof the clutches used for selecting various feeding rollers foroperation; I

Fi 10 is a cross sectional view taken .on the l1ne 10-10 of Fig. .9;

Fig. 11 is a view taken on the line 1111 of Fig. 9 and shows the one-waydrive between the driven rollers and the driving mechanism;

Figs. 12 to 16 inclusive illustrate some of the diflerentpaper feedingoperations that may be performed by the present improve ments. I

Similar reference numbers in all of the above figures are employed todesignate corresponding parts thereof.

. herein. As is well known, as the perforated cards are passed throughthe machine, one or more of the counters are operated to show thefigures or the totals of the figures represente by the perforations inthe cards.

The printing 'devices whereby numerals corresponding to the perforationsin particular card columns or the amount standing on any particularcounter wheel are printed, comprise a plurality of groups of type barsF' s. 1 and 2) any one of which may be impe e by suitable hammers (notshown) printing unctions. Inasmuch as the .printing devices and thecontrolling devices therefor are not involved in the presentapplication, they are not shown in detail herein. For further details ofconstruction reference may be had to the atent to C. D. Lake, No.1,379,268, dated ay 24, 1921.

The paper strip 19 upon which is printed numerals by means of the type20 and an inking ribbon 22 (Fig. 1) interposed between the type and thepaper strip is drawn from i a storage roller (not shown). The paperstrip thence passes around a tension roller 23 carried by a spring-ur edarm 24, then around fixed rollers 25 an 26 to the platen roller 21. l y

The printing mechanism is shown as equipped with a pair of paper strips19 (see Fig. 2) and in the present case each strip after it passesaround the platen 21 is led between cooperating feeding rollers of'whichthere are two pairs designated A, B (Fig. 1) and C, D (Fig. 3) therighthand paper strip passing between the pair of rollers A, B while theleft hand strip passes between the pair of rollers C, D. As each stripasses awa from the related cooperating ceding ro ers it is fed over astationary guide plate 27 to permit the printed endof the paper strip tobe either rolled upon a storage roller in the usual manner or bedeposited in a suitable receptacle. It is obvious, of course, that awide paper strip may be provided in lieu of two strips in WhlCll casethe single paperstrip wil cooperate with both pairs of feeding rollers.As is best shown in Fig. 2, the feeding rollers A and C are inlongitudinal alinement and are rotatably mounted upon a shaft 28, i asimilar construction provided for ainst a platen 21 to perform the thefeeding rollers B and D, this pair of rollers be mounted upon thesupporting shaft 29. 'fiie adjacent ends of feeding rollers A and C aremounted upon the shaft 28 by means of roller bearings 30 (Fig. 2), asimilar construction also bein provided for rollers B and D. Each feeing roller is rotatably molmted at its otherend on the supporting shaftby an annular disk 31 (Fig. 9) provided with gear teeth 32. It will benoted that the gear teeth of the parallel pairs of feeding rollersintermesh so that one may be driven by the other. Shaft 29 whichsupports the longitudinally alined feeding rollers B and D is fixed atits ends in the stationary frame portions of the machine but shaft 28which carries the longitudinallyalined feeding rollers A and C iscarried by a pair of plates 33 and 34 (Figs. 1 and 4) loosely mountedupon a rod 35 the lower portions of each of the plates 33 and 34 havingextensions to which are connected springs 36 in order to urge the pairsof feeding rollers A, B and C, D into cooperative relationship. In orderto disen age the feeding rollers for the purpose of readin the papertherebetween, a rod 37 (Fig. 4 is provided and has a flattened portion38 bearing against the extensions of the plates 33 and 34 so that as therod 37 is rocked b means of a finger piece 39, the feeding rol erscarried by shaft 28 will be disengaged from the cooperating feedingrollers.

A system of clutches is rovided for the various feeding rollers wlierebysegments which are operable during different machine operations maydrive either pair of feeding rollers. The particular manner in whichthis is obtained will now -be described in detail. p y

Clutch E (Fig. 9) which controls the establishment of the drivingconnection between shaft 28 and the pair of feeding rollers C, D may betaken as a representative of the particular mechanical expedient adoptedfor shifting the driving connections to the various feeding rollers. Bymeans of a splined connection 40 (Figs. 9 and 10) to s aft'28 a flangedcollar 41 may be rotatably driven "by shaft 28 as it is shiftedlongitudinally on a sleeve 42 encircling shaft 28. When a sufficientshifting movement has been given to collar 41 a pin 43 carried therebywill engage one of a plurality of notches 44 formed in the face of disk31. This shifting movement is placed under control of a lever 45 pivotedat 46 and having a pin 47 engaging an annular groove 48 in the collar41. This clutch, which is designated generally as clutch E, establishesa clutch connection between shaft 28 and feeding roller C which latterdrives feeding rollmechanism similar to that disclosed in Figs,

9 and 10 is provided. The clutch G establishes a connection betweenshaft 28 and the feeding rollers A, B when a control lever 49 is movedto the left, but when lever 49 is shifted to the right a clutch H isadapted to connect shaft 29 to the pairs of feeding rollers A, B. Thusin general, either shaft 28 or 29 may drive either or both pairs offeeding rollers.

Shaft 29 is adapted to be driven by a gear segment. 50 (Figs. 3 and 9)while shaft 28 is driven by a gear segment 51 (Figs.4 and 9).

movement will be effected between ratchet.

Loosely mounted on shaft 29 is a gear 52 (Figs. 3 and 9) meshing withsegment 50, the gear having a hub 53 to which is attached a disk 54carrying a pawl 55 (Fig. 11) engaging the teeth of a ratchet wheel 56.The hub of the ratchet wheel 56 is reduced to receive an alining wheel57 (Figs. 3 and 9) and a gear wheel 58, a pin 59 being adapted to securethese three elements for a unitary movement. For the present purposes itmay be assumed thatgear wheel 58 is rigidly secured in some manner to agear wheel 62 pinned to shaft 29 by a pin 63. Shaft 29 has attached atits end a knurled operating knob 64 to permit manual adjustment of shaft29 so that as the shaft 29 and ratchet wheel 56 are turned in thedirection of the arrow shown in Fig. 11, an idle ratcheting wheel 56 andpawl 55 but the clutched rollers will be turned. .As the shaft 29 isturned it is held in alined position by an alining pawl 65 (Fig. 3)engaging the interdental spaces of the alining wheel 57.

The driving connection between shaft 28 and gear'51' differsonly in thatthe gear segment 51 drives a pinion 66 (Fig. 4) which imparts movementto a gear 69 on shaft 28 through a train of idler gears 67 and 68. Itwill be recalled that shaft 28 is springurged towards shaft 29 andthe'purpose of the gear train just described is to thrust shaft 28towards shaft 29 to force the feeding rollers into cooperation, thusassisting spring 36. Gear 69 is similar to gear 52 on shaft 29 and has asimilar connection to its shaft 28. ,7

It will be obvious that the extent of rotation of the cooperatingfeeding rollers when driven by segment 51 is directly proportional tothe extent of 'movement imparted to the segment and in the presentinstance, a manual control is provided 'to vary the extent of movementto give the proper line spacing movement when it is necessary to conformto predetermined requirements. Segment 51 (Fig. 4) is attached to asegment-shaped frame 70 by suitable fastening means 71. Segment frame 70is loosely mounted upon a stud shaft 72 and adjacent to the frame is anarm. 73 carrying a pawl 74 adapted to engage the ratchet teeth 75 formedon the inner concentric edge of rack 51 to thereby drive frame 70 andrack 51. Arm 73 is given an invariable movement during machineoperations and in order to vary the movement given to segment rack 51 ashield 76 is interposed between pawl 74 and ratchet teeth 75 to vary thenumber of effective ratchet teeth. Shield 76 is attached to a plate 77(Fig. 7) loose on stud shaft 72 and is held in a desired position by aholding pawl 78 (Fig. 4) carried by plate 77 and engaging theinterdental spaces of a fixed plate 79. A finger piece 80 movable over ascale 81 (Fig. 6) indicates the degree of line spacing that may beeffected by subsequent machine operations) Operating arm 73 has suitableconnections to. the drivin parts of the machine described as follows:ower for driving the various mechanisms is, in the present case,obtained by an auxiliary motor the power shaft of which has a beltconnection 82 (Fig. 5) to a drive shaft 83. A pinion 84 (Figs. 3 and 5)on shaft 83 drives a gear 85, the latter being connected to a gear 86bya sleeve 87. Gear 86 drives a gear 88 to which is attached ratchetwheels 89 and 90. Thus, through the train of gears, just described,ratchet Wheels 89 and 90 are constantly rotated. Loosely mounted on ashaft 91 which carries gear 88 and ratchet wheels 89 and 90 is a cam-92(Fig. 4) engaging a roller 93 carried by a bell crank arm 94 having alink connection 95 to an extension of the arm 73. The profile of cam 92is so shaped as to reciprocate arm 73 during each rotation of said cam.A pawl 96 carried by cam 92 is adapted to engage the interdental spacesof the ratchet wheel 89 to thereby drive cam 92.

The mechanism for effecting the control of one of the linespacingmechanisms is under control of the ratehet wheel 89 and a magnet 97.Pawl 96 is normally held in cam 92 completes a revolution, magnet 97will be deenergized permitting the lug 99 to again be in the path of theextension 98 disengaging pawl 96 from ratchet wheel 89 thus stoppingmovement of cam 92. To prevent I a downward extension of a gravityoperated pawl 102 substantially at the termination of the rotation ofthe parts. Pawl 102 is pivoted on the pivot pin of the armaturestructure and has a; pair of stop abutments 103 which are spaced aparta, greater distance than the diameter of the cooperating rod 104 whichpermits pin 101 to pass idly by the extension of pawl 102 to assume thereboundpreventing position shown.

Shock to the parts operated is minimized by a spring-retarded plunger105 (Fig. 4) to which is pivoted a slidably mounted member 106, thelatter cooperating with a pin 107 carried by the frame 70. Frame 70 isrestored to normal by a spring 108 and as it approaches this positionthepin 107 engages the member 106 compressing a previously extended coilspring 110.

Current for operating the motor is su p llified by line wires 111 and112 (Fig. 8

e circuit for magnet 97 extends from the right side of the line 112through the magnet 97, to contacts 113which are in series with camcontrolled contacts 114, thence to the left side of the line 111.Contacts 113 are controlled by a lever 115 which has two positions, theList which completes the circuit connection to magnet 97 from contacts114 and the Non-list which breaks said circuit connection. Contacts 114are timed to close after item printing operations.

The above makes it clear that if a strip of aper is inserted betweenfeeding rollers C, (Fig. 2) adjustment of lever to the right will permitshaft 28 to drive said rollers whereby items may be listed on the stripwith predetermined spacings (see Fig. 12). However, the adjustment oflever 49 to the left only will permit shaft 28 to drive rollers A, Bpermitting items of predetermined spacing to be effected on the stripbetween t ese rollers. If a single 'sheet cooperates with both pairs ofrollers adjustment of levers 45 and 49 toward each other will providefor the driving of both pairs of rollerswbg shaft 28.

en printing items in this manner (see Fig. 13) it is frequentlydesirable to limit the number of items that may be placed on a sheet inorder to provide a suitable s acbetween the groups of items printet on aong work sheet or else insure that the number of items printed willconform to the number that may be accommodated.

A cross bar 116 (Figs. 3 and7) is ada ted to connect the arm 73 and asimi ar arm 117, the latter carrying a pawl 118 (Fig. 3) engaging therack teeth 119 of the gear segment 50. Gear segment, is carried by asegment frame 120 also pivotally mounted on the stud shaft 72. It willbe noted that: the driving mechanism for segment 50 just described 1Ssubstantially a duplicate of that shown in Fig. 4, it being furthernoted that a shield 121 carried by a plate 122 may be adjusted by afinger piece 123 and held in adjusted position by a pawl 124 to vary theeffective number of rack teeth 119. When this part of the apparatus isutilized for the purpose of llllliting the number of item printings theshield is preferably adjusted so that pawl 118 effects a single ratchettooth movement of segment 50 during each paper feeding operation. Thesegment 50 1s held in its successively advanced positions by aspringurged retaining pawl 125 also cooperating with the ratchet teeth119. As the gear segment 50 is moved downwardly an adjustable block 126slidable in a concentric groove in frame 120 and rigidly held by a screw143 advances towards a finger 127 of a contact control member 128 andopens con tacts 129 when the block 126 actuates the fin er 127. I

ince contacts -129 are preferably in the motor circuit of the tabulatingmachine the driving motor will thereupon stop and card and paper feedinoperations will cease. Block 126 is preliminarily adjusted when segment50 is at normal so that its position adjacent a scale 109 (Fig. 6) willindicate the number of items that may be printed.

Restoration of the gear segment to its normal starting position may beprovided for by manually disengaging pawl 125 (Fi 3) so that a spring130 may return the advanced parts, the shock being absorbed by acushioning device 131 similar to the one previously described.

It has been assumed that levers 45 and 49 (Fig. 2) have been movedtoward each other so that the feeding rollers are driven by shaft 28 tofeed a wide paper strip. However, if levers 45 and 49 are moved awayfrom each other the feeding rollers will be driven by shaft 29 instead,the spacing'of successive items being determined by the setting of thepawl-124. It is preferable, however, to drive the feeding rollers byshaft 28 when a spacing is desired that does not conform to thesuccessive advancement of segment 50 corresponding to a ratchet toothspace, otherwise scale 109 may not correctly indicate the number ofitems that may be printed.

Themachine may be adjusted so that the item printing limiting mechanismis inoperative while segment 50 is driving the feedingrollers. To thisend latch 125 may be retained in disengaged position with respect toratchet teeth 119 by a pawl 132 (Fig. 3). Segment 50 will therefore, bereturned to normal after being actuated during each pa r feedingoperation.

previously stated the items listed are chine also provides for this togive a differ- .ent spacing before and after total printing operationsin the following manner.

The particular mechanism for controlling machine operations to print atotal of a group of items either automatically or manually is shown anddescribed in the Lake Patent No. 1,379,268 and in the presentconstruction numeral 133 (Fig. 3) indicates a magnet which controls thespacing of thepaper upon instituting total printing operations. As shownin Fig. 8 this magnet 1s 111 .series. connection with cam controlledcontacts 134 which close so as to energize magnet 133 before a totalprinting operation is instituted and performed in the manner explainedin the Lake patent. Prior to total printing. operation the paper will,however, be spaced by the usual item spacing mechanism to additionallyseparate the item from the total. In this case shaft 29 is utilized todrive the feeding rollers and the extent the paper is fed betweensuccessive item printing operations in proportional to the setting offinger piece 123 and where items are merely listed on a long work sheet(Fig.

i 14), a space is provided before and after each total printingoperation. When it is desired to have a paper feed before and after atotal taking operation the feeding rollers are driven b shaft 29, theoperating connection being rom gear segment 50. Pawl 125isadjusted to beheld out of engagement with the ratchet teeth 119 by pawl .132 so thatsegment 50 may be returned after each actuation by pawl 118 and theblock 126 is preferably adjusted to the dotted line position shown inFig. 3.

: Upon the initiation of a total taking operation cam'contacts 134 closeimmediately to energize magnet 133. The cam portion 135a (Fig. 3) willthereupon rock arms 139 and 141 and since block 126 is in direct contactwith a finger 142 of arm 141 segment 50 will be depressed to feed thepaper strip before a total printing operation. As the dwell'135b of cam135 is in operative relationship with the roller of arm 139, paperfeeding operations will be suspended and a total printing operation willoccur during this'time. Subsequently the cam ortion 1350 will rock arms139 and 141 urther to again feed the paper strip after the totalprinting operations. When printing upon a long work sheet this willprovide for a head space between the last printed total and the nextgroup of items to accommodate preprinted matter. By adjusting block 126to provide for a lost last item printing position on the 'sheet if' atotal should be taken before a predetermined number of item printingshave been effected. In this instance pawl 125 is released to holdsegment 50 in its succes sively advanced positions, block 126 graduallyapproaching finger piece 127. If a total taking operation should beinstituted prior to the time that block 126 has completed the length ofits travel which is commensurate with the number of items to be printed,magnet 133 will then be energized resulting in a downward movement ofarm 141 and as finger 142 contacts with block 126 it will move segment50 the remainder of the distance. This will result in feeding the paperstrip the distance it would have been if a predetermined number of itemprintings was effected, (see example shown in Fig. 15).

In this instance as arm 141 is depressed a camming finger 144 thereofwill coact with a lug 145 of pawl 125 disengaging it from ratchet teeth119 to permit the advanced parts to be returned to normal simultaneouslywith the return of arm 141. Since contacts 129 are opened operation ofthe tabulator will be stopped.

In total taking operationsit will be observed from the circuit diagram(Fig. 8) that when the lever 115 is in the position shown the circuitfor magnet 133 is established from the left side of the line 111 to theright side of the line 112 through cam controlled contacts 134i Thelisting control lever 115 is also shown in Fig. 3 and is adjusted by anarm 150 connected thereto by a link 149, said arm having two possiblepositions. ,When the arm 150 is moved to the non-list position contacts113 will be opened and contacts 146 closed. At the same time a pin 147'carried by an extension of the pawl 125 cooperating with a closed slotin the link 149 will hold tions may be controlled by either magnet 97 or133. When lever 115 (Fig. 8) is adusted to the non-list position thecircuit through magnet 97 will be closed by closed feeding contacts 146and cam controlled contacts 134. Levers 45 and 49 (Fig. 2) are adjustedtowards each other when it is desired to space a wide paper sheet bydriving shaft 28. The extent of spacing of the totals, in this instance,will be controlled by the setting of finger piece (Fig. 4).

When it is desire to space the paper strip for totals by driving shaft29, levers 45 and 49 are ad usted towards each other. Spacing of therecord strip will occur before and after total printing operations, aspreviously described. Block 126 is preferably removed from frame 120 soas not to stop the machine after the first total printing operations.

"Attention is directed to the fact that when the control lever 115 is inthe position shown in Fig. 8 the attachment may be conditioned so as toprint the items in the usual manner on one record sheet and the totalson the other as illustrated in Fig. 2. In this instance lever 45 (Fig.2) is adjusted to the right so as to establish a connection betweenshaft 28 and the pairs of feeding rollers C, D. Segment 51 willtherefore drive the rollers C, D to space the items (see Fig. 2 Thelever 49, however, is adjusted to the right so as to establish aconnection between shaft 29 and feeding rollers 'A, B. Total segment 51(Fig. 4) will, therefore, drive shaft '29 and rollers A, B whenever atotal is taken.

It has been assumed, referring particular- 1y to Fig. 9, that a rigidconnection is established between gear 58 and a gear 62. A difierentconnection is preferable in order to be able to turn the feeding rollersinde pendently slightly to conform to some predetermined spacings, suchas those governed by printed lines. Without the present connection orequivalent construction a spacing less than that controlled by theinterdental s aces of alinin wheel 57 (Fig. 3) coul not be provi ed for.Gear 58 is adapted to mesh with a'pinion 60 pivotally mounted on anannular ring 61 which is loosely mounted on the hub of the gear 62.Pinion 60 is' of sufficient width to mesh with gear 62. As gear 58rotates, pinion 60 will be driven in an opposite direction and as itrolls over gear 58 it will drive gear 62. Gear 58 is preferably formedwith the smaller number of teeth than gear 62, and in the presentembodiment gear 58 has twenty-eight teeth while gear 62 has thirtyteeth. It will be understood, there fore, that if a feeding roller isclutched to shaft 29 and the shaft turned slightly by knob 64, gear 62will rotate pinion 60 slightly but due to the relative dimensions of theteeth of pinions 62 and 58, the pinion 60 may rotate slightly withoutrotating gear. 58. Thus shaft 29 may be given an independent movement tobring the paper sheet to the proper printing position.

While there have been shown and described and pointed out thefundamental novel features of the invention as appliedto a singlemodification it will be understood that various omissions andsubstitutions and changes in the form and details of the deviceillustrated and in its operation may be made by those skilled in the artwithout departing from the spirit of the invention. It is the intention,therefore, to be limited only as indicated by the scope of the followingclaims:

What is claimed is- 1. In a machine of the class described thecombination with a printing mechanism adapted to list data upon recordsheets, of a plurality of pairs of feeding rollers, a driving rackoperable automatically as an incident to listing operations, selectivemeans whereby either pair or a plurality of pairs of feeding rollers maybe driven by the driving rack, means for retaining the rack insuccessively operated ositions, and a control device movable with therack for redetermining the number of sheet fee ing operations.

2. In a machine of the class described the combination with a printingmechanism adapted to list data upon record sheets interposed between asingle or a plurality of pairs of feeding rollers, of driving meanscomprising a rack member, selective means *whereby a single or aplurality of pairs of feeding rollers may be driven by said rack member,said rack member being provided with means for determining the number ofsheet feeding operations. 7

3. In a machine of the cla$ described the combination with a printingmechanism adapted to print items or totals u n record sheets, of searate pairs of feeding rollers each be' a apted to feed the relatedrecord sheet, a riving means automatically driven when the printingmechanism is effective to print items, a separate driving meansautomatically driven when the printing mechanism is effective to printtotals,'and selective means whereby either driving means may drive anydesired pair of feeding rollers.

4. In a machine of the class described the combination with a printingmechanism sive items and totals, and adjustable means for controllingthe line spacing means to automatically vary vthe spacing between aprinted item and total.

5. A machine of the clas described inv eluding in combination, aprinting mechanism adapted to effect printing operations upon a recordsheet, and selective means whereby said record sheet may be spacedautomatically as an incident to successive item printing operations orsuccessive but different total printing operations and withoutintermediate item imprints. W

6. A machine of the class described including in combination, a printingmechanism adapted to effect printing operations upon a record sheet,selective means including a single drivingo member whereby said recordsheet may bevspaced automatically as an incidentto successive item orsuccessive but difi'erent total printing operations and means controlledby the driving member for predetermining the number of successive itemsor successive totals that may be spaced on a sheet.

7. A machine of the class described including in combination, aprintingmechanism for printing items and totals upon a record sheet, meansforlfeeding the record sheet to space successively printed items, a cam,and record sheet feeding means operated by and during a singlerevolution of said cam whereby said record sheet is spaced prior andsubsequent to total printing operations. A

8. A machine of the class described including in combination, a printingmechanism 'for printing a total of a series of items on a record sheet,a' cam, and means operated by and during a single revolution of said camfor feeding said record sheet prior and subsequent to totalprintingoperations.

9. A machine of the class described including in combination, a printingmechanism adapted to list items and totals on a record sheet,'a pair offeeding rollers cooperating with said record sheet, intermittent yactuated means for driving said feeding rollers to space the recordsheet as an incident to item printing operations, and a camautomatically operable as an incident to total carried by said rackmember for predetermining the number of items to be listed.

12. In a machine of the class described, the combination with a printingmechanism adapted to print upon record sheets, of a plurality of pairsof feeding rollers, a common driving means therefor automaticallyoperable as a result of a printing operation for driving said rollers tofeed said record sheet in an alternating sequence with respect toprinting operations, and selective means whereby either pair of feedingrollers may be driven by the common driving means.

13. In a machine of the class described the combination of a printingmechanism for printing totals on a record sheet, and a cam'having camportions effective for spacing the record sheet prior and subsequent tototal printing operations, said cam having a dwell intermediate said camportions and ineffective during the rotation of the dam to space thework sheet while total printing operations are being effected.

14. In a machine of the class described, the combination with a printingmechanism for printing items and totals on a rec- .ord strip, of recordstrip spacing mechanism automatically operable when the printingmechanism is efi'ecting item printing operations on one strip,supplemental record strip spacing mechanism automatically op erable whenthe printing mechanism is effecting total printing operationson anotherstrip, and selective means whereby the first mentioned spacing mechanismisvalso automatically rendered operable when the printing mechanism isprinting totals on both strips. g a

In testimony whereof I hereto aflix my signature.

- FRED M. CARROLL.

printing operations and by a single revolu- 11. A machine of the classdescribed comprising in combination, a printing mechanism adapted toprint items on a record sheet, a pair of feeding rollers cooperatingwith said record sheet, a rack member adapted to drive said rollers,means for holding said rack member in successively advanced positions,and an adjustable device

